Ts = Td + (.192 * (Td-Tg)/Gr)) + 3
Where:
* Ts = Final Strike Temp
* Td = Desired Strike Temp
* Tg = Current Grain Temp
* Gr = Grain Ratio
Notes: .192 is the "water equivalent" or volume of water whose heat
capacity is equivalent to that of a given mass/weight of grain
based on specific heat of grain being 0.4
3 is the temperature added to account for heat loss during transfer
or put more succintly; the "Fudge Factor" to account for thermal mass lost
(3 deg for F or 1.7 deg for C)